Allowance for Credit Losses (Schedule Of Newly Restructured Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	$ 5,702	$ 1,960
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	0	118
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	0	1,842
Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	5,678	0
Consumer & other, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	$ 24	$ 0